Intensive pouring bus duct

Abstract

The utility model discloses an intensive pouring bus duct, and relates to the field of bus duct design, the intensive pouring bus duct comprises a bus duct body and a connector, the bus duct body comprises a protective housing and a plurality of conductors, the protective housing wraps the plurality of conductors, and gaps between the protective housing and the plurality of conductors are filled with insulating resin; bus duct plugs are installed at the two ends of the bus duct body in a closed mode, the ends of the conductors extend out of the bus duct plugs, bus duct connectors are fixedly installed at the two ends of the bus duct body, and the conductors are electrically connected and installed at the bus duct connectors in a one-to-one correspondence mode; the connector is installed between the two bus duct bodies, bus duct joints of the two bus duct bodies are electrically connected through the connector, and gaps between the connector and the bus duct joints are filled with insulating resin; according to the utility model, the gap is filled by pouring the insulating resin, and the cable has the advantages of compact appearance, less pouring material consumption, water resistance, fire resistance, corrosion resistance, explosion resistance, low temperature resistance and strong insulating property.

Description

Technical Field

[0001] The utility model relates to the field of bus duct design, in particular to a dense cast bus duct which can be used for a new bus trunk system of a power transmission and distribution system. Background Art

[0002] Due to the need for electricity in various buildings such as buildings and factories, and this need has an increasing trend year by year, the use of the original circuit wiring method, that is, the pipe wiring method, brings many difficulties during construction. Moreover, when changing the distribution system, it is almost impossible to make it simpler. However, if bus ducts are used, the purpose can be achieved very easily, and it can also make the building more beautiful.

[0003] Cast bus duct is made of high-performance insulating resin and a variety of inorganic minerals. Cast bus duct is to directly cast and seal the busbar, thereby greatly improving the protection performance and making the protection level reach IP68. It is a new type of bus duct with four protection functions: waterproof, fireproof, anti-corrosion and explosion-proof.

[0004] The prior art (Announcement No.: CN205693300U, Announcement Date: 2016.11.16) discloses a snap-on anti-deviating connector, which ensures the safety of the connection between bus ducts by using a specific connector and profile pressure plate, as well as a matching torque insulating screw, preventing the connector from deviating from the center contact surface, making the structure more stable, and ensuring that the bus duct has sufficient current passing through the contact surface during operation, and will not cause the bus duct to short-circuit or even stop operating due to the small connector contact surface.

[0005] However, the above solution does not include cast insulating materials, while the cast bus ducts on the market require casting insulating resin and other materials in addition to the conductors. This will increase the volume and weight of the entire cast bus duct, resulting in significant restrictions on transportation and installation. It will also increase material consumption and the cost of the bus duct. Therefore, it is necessary to design a dense cast bus duct. Utility Model Content

[0006] In order to overcome the above-mentioned shortcomings, the utility model provides a technical solution that can solve the above-mentioned problems.

[0007] A dense cast bus duct includes a bus duct body and a connector. The bus duct body includes a protective shell and a plurality of conductors. The plurality of conductors are arranged at intervals. The protective shell wraps the plurality of conductors. The gaps between the protective shell and the plurality of conductors are filled with insulating resin.

[0008] Both ends of the bus trough body are sealed and installed with bus trough plugs, the ends of the conductors extend from the bus trough plugs, and both ends of the bus trough body are fixedly installed with bus trough joints, and the conductors are electrically connected one by one and installed at the bus trough joints;

[0009] The connector is installed between two bus duct bodies, and the bus duct joints of the two bus duct bodies are electrically connected through the connector. The gap between the connector and the bus duct joints is filled with insulating resin.

[0010] Further: the connector includes a shell, insulating bolts and several partitions, the several partitions are installed in the shell through the insulating bolts, the bus trough connectors at the ends of the two bus trough bodies are respectively plugged and fitted at the two ends of the shell, the bus trough connectors are inserted between the two adjacent partitions with a one-to-one corresponding clearance fit, and the insulating bolts are clamped through the partitions to clamp the bus trough connectors.

[0011] Furthermore: the insulating resin in the connector is filled and installed in the gaps between the shell, the insulating bolts, the plurality of partitions and the bus duct joint.

[0012] Furthermore: an isolation sleeve is provided between two adjacent partitions, and the isolation sleeve is installed on the insulating bolt.

[0013] Furthermore: a plurality of heat sinks are formed on the outer wall of the protective shell, and the heat sinks are arranged in an array at equal distances from each other.

[0014] Furthermore: an upper cover plate is detachably mounted on the upper side of the protective shell, and a lower cover plate is integrally formed on the lower side of the protective shell.

[0015] Furthermore: a U-shaped groove is formed on the bottom side of the upper cover, one side edge of the upper end of the protective shell is installed in the U-shaped groove with a clearance fit, and the other side of the upper end of the protective shell is fixed to the bottom side of the upper cover by rivets.

[0016] Furthermore: a recessed groove is formed on the upper side of the protective shell, a sealing ring is installed in the recessed groove with a clearance fit, and the upper side of the sealing ring abuts against the bottom side of the upper cover plate.

[0017] Compared with the existing technology, the utility model is cast by high-performance insulating resin, and has the following specific advantages:

[0018] 1. Compact appearance: The busbar is directly cast and sealed, with a small volume. The linear expansion coefficient of the resin is very close to that of copper, which enhances the thermal stability. At the same time, the volume is smaller than that of the general cast bus duct;

[0019] 2. Less amount of casting material: the same performance as cast bus duct can be achieved with smaller volume and weight, so the cost is also lower;

[0020] 3. Waterproof, fireproof, anti-corrosion and explosion-proof: The protection level of cast bus duct can reach IP68, which is suitable for the power demand of various special occasions. It can work in water for a long time and can also be buried underground without being restricted by altitude.

[0021] 4. Low temperature resistance: It can work in an environment of -40℃ for a long time without cracking;

[0022] 5. Strong electrical insulation performance: safe and reliable, will not release harmful gases;

[0023] 6. Water resistance: Made of high-performance insulating resin, it has excellent air tightness and water tightness, with a protection level of IP68, and can operate reliably for a long time under continuous immersion in water;

[0024] 7. Fire resistance: Insulating resin is a self-extinguishing insulating material that can work normally for a long time in high temperature flames;

[0025] 8. Corrosion resistance: Using epoxy resin casting material, it can effectively resist the erosion of various chemicals;

[0026] 9. Mechanical properties: The mechanical properties of the shell are stronger than those of pure cast bus duct, and it has good explosion-proof performance;

[0027] 10. All-weather product: not restricted by altitude, can work in an environment of -40℃.

[0028] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0030] Figure 1 It is a side structural schematic diagram of the utility model;

[0031] Figure 2 This is a schematic diagram of the top view of the structure of the utility model;

[0032] Figure 3 Schematic diagram of the top cross-sectional structure of the connector;

[0033] Figure 4 It is a schematic diagram of the cross-sectional structure of the bus duct body;

[0034] Figure 5 It is a schematic diagram of the cross-sectional structure when another upper cover is used.

[0035] As shown in the figure: 1. Bus duct body; 1.1. Protective shell; 1.2. Conductor; 2. Connector; 2.1. Shell; 2.2. Insulation bolt; 2.3. Partition; 3. Insulation resin; 4. Bus duct plug; 5. Bus duct joint; 6. Isolation sleeve; 7. Heat sink; 8. Upper cover; 9. Lower cover; 10. U-shaped slot; 11. Recessed slot; 12. Sealing ring. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0037] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention.

[0038] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0039] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0041] like Figure 1-5As shown, a dense cast bus duct of the present invention includes a bus duct body 1 and a connector 2. The bus duct body 1 includes a protective shell 1.1 and a plurality of conductors 1.2. The plurality of conductors 1.2 are arranged at intervals from each other. The protective shell 1.1 wraps the plurality of conductors 1.2. The gaps between the protective shell 1.1 and the plurality of conductors 1.2 are filled with insulating resin 3.

[0042] Both ends of the bus duct body 1 are sealed and installed with bus duct plugs 4, and the ends of the conductors 1.2 extend from the bus duct plugs 4. Both ends of the bus duct body 1 are fixedly installed with bus duct joints 5, and the conductors 1.2 are electrically connected one by one at the bus duct joints 5;

[0043] The connector 2 is installed between the two bus duct bodies 1. The bus duct joints 5 of the two bus duct bodies 1 are electrically connected through the connector 2. The gap between the connector 2 and the bus duct joints 5 is filled with insulating resin 3.

[0044] The principle is as follows: the intensive cast bus duct consists of two parts: a bus duct body 1 and a connector 2. A protective shell 1.1 is used to wrap the conductor 1.2 in the bus duct body 1, and then the insulating resin 3 is poured into the gap between the protective shell 1.1 and the conductor 1.2 by using a casting resin method. After filling, the bus duct plugs 4 are plugged at both ends of the protective shell 1.1 to achieve sealing; the connector 2 is used as a connecting component between the two sections of the bus duct body 1. After the connection is completed, the insulating resin 3 is poured into the gap between the connector 2 and the bus duct joint 5 for insulation sealing, so that the entire cast bus duct is filled with insulating silicone grease 3 from the inside to the outside by using an intensive casting method. After the insulating silicone grease 3 is dried, it can provide corrosion resistance, fire resistance, and waterproof performance, and can enhance the mechanical strength of the protective shell 1.1 and the connector 2 shell, thereby improving the service life.

[0045] Furthermore: the connector 2 includes a shell 2.1, insulating bolts 2.2 and a plurality of partitions 2.3, and the plurality of partitions 2.3 are installed in the shell 2.1 through the insulating bolts 2.2. The bus duct connectors 5 at the ends of the two bus duct bodies 1 are respectively plugged and fitted at the two ends of the shell 2.1. The bus duct connectors 5 are inserted into the gaps between the two adjacent partitions 2.3 with one-to-one corresponding clearances, and the insulating bolts 2.2 are clamped through the partitions 2.3 to clamp the bus duct connectors 5; the insulating resin 3 in the connector 2 is filled and installed in the gaps between the shell 2.1, the insulating bolts 2.2, the plurality of partitions 2.3 and the bus duct connectors 5; the insulating bolts 2.2 can be used to adjust the tightness of the plurality of partitions 2.3, so that the bus duct connectors 5 on both sides are clamped between the two partitions 2.3 for preliminary positioning, and then the insulating resin 3 is filled by pouring to achieve the effect of precise positioning.

[0046] Furthermore: an isolation sleeve 6 is provided between the two adjacent partitions 2.3, and the isolation sleeve 6 is installed on the insulating bolt 2.2; the two adjacent partitions 2.3 can be separated from each other by the isolation sleeve 6, which facilitates the clamping of the bus duct joint 5. At the same time, the isolation sleeve 6 has insulating properties, thereby improving the insulation effect of the insulating bolt 2.2.

[0047] Furthermore: a plurality of heat sinks 7 are formed on the outer wall of the protective shell 1.1, and the heat sinks 7 are arranged in an array at equal distances from each other; this can enhance the passive heat dissipation effect of the bus trough body 1 after it is energized, can withstand higher voltage and current, and can quickly dissipate heat.

[0048] Furthermore, an upper cover plate 8 is detachably mounted on the upper side of the protective shell 1.1, and a lower cover plate 9 is integrally formed on the lower side of the protective shell 1.1, which facilitates the installation and use of the protective shell 1.1.

[0049] Optional: A U-shaped groove 10 is formed on the bottom side of the upper cover plate 8, and one side edge of the upper end of the protective shell 1.1 is installed in the U-shaped groove 10 with a clearance fit, and the other side of the upper end of the protective shell 1.1 is fixed to the bottom side of the upper cover plate 8 by rivets; the upper cover plate 8 can be removed from the protective shell 1.1, which is convenient for installation and disassembly.

[0050] Furthermore: a recessed groove 11 is formed on the upper side of the protective shell 1.1, and a sealing ring 12 is installed in the recessed groove 11 with a clearance fit, and the upper side of the sealing ring 12 abuts against the bottom side of the upper cover plate 8; thus, a sealing effect can be achieved and the service life is improved.

[0051] The utility model can add a variety of inorganic minerals into the insulating resin 3 before casting, thereby improving the fireproofing, waterproofing and corrosion resistance performance.

[0052] This embodiment does not impose any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model are within the scope of protection of the technical solution of the utility model.

Claims

1. A dense cast bus duct, comprising a bus duct body and a connector, characterized in that: The bus duct body includes a protective shell and a plurality of conductors, the plurality of conductors are arranged at intervals, the protective shell wraps the plurality of conductors, and the gaps between the protective shell and the plurality of conductors are filled with insulating resin; Both ends of the bus trough body are sealed and installed with bus trough plugs, the ends of the conductors extend from the bus trough plugs, and both ends of the bus trough body are fixedly installed with bus trough joints, and the conductors are electrically connected one by one and installed at the bus trough joints; The connector is installed between two bus duct bodies, and the bus duct joints of the two bus duct bodies are electrically connected through the connector. The gap between the connector and the bus duct joints is filled with insulating resin.

2. The intensive cast bus duct according to claim 1, characterized in that: The connector includes a shell, insulating bolts and several partitions. The several partitions are installed in the shell through the insulating bolts. The bus duct connectors at the ends of the two bus duct bodies are respectively plugged and fitted at the two ends of the shell. The bus duct connectors are inserted between the two adjacent partitions with a one-to-one corresponding clearance fit. The insulating bolts are set by clamping the bus duct connectors through the partitions.

3. The intensive cast bus duct according to claim 2, characterized in that: The insulating resin in the connector is filled in the gaps between the shell, the insulating bolts, a plurality of partitions and the bus duct joint.

4. The intensive cast bus duct according to claim 2, characterized in that: An isolation sleeve is provided between two adjacent partitions, and the isolation sleeve is installed on the insulating bolt.

5. The intensive cast bus duct according to claim 1, characterized in that: A plurality of heat sinks are formed on the outer wall of the protective shell, and the heat sinks are arranged in an array at equal distances from each other.

6. The intensive cast bus duct according to claim 1, characterized in that: An upper cover plate is detachably mounted on the upper side of the protective shell, and a lower cover plate is integrally formed on the lower side of the protective shell.

7. The intensive cast bus duct according to claim 6, characterized in that: A U-shaped slot is formed on the bottom side of the upper cover plate, and one side edge of the upper end of the protective shell is installed in the U-shaped slot with a clearance fit, and the other side of the upper end of the protective shell is fixed to the bottom side of the upper cover plate by rivets.

8. The intensive cast bus duct according to any one of claims 6 or 7, characterized in that: A recessed groove is formed on the upper side of the protective shell, a sealing ring is installed in the recessed groove with clearance fit, and the upper side of the sealing ring abuts against the bottom side of the upper cover plate.

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